A series AC circuit is operated at angular frequency

PHYSICS · Single correct · CBSE · Physics · Alternating Current · Alternating Current

Problem

500\,\text{rad\,s}^{-1}

. Which of the following component sets will ensure that the current drawn from the source is wattless? (a)

R=5\,\Omega,\;L=0.40\,\text{H},\;C=10\,\mu\text{F}

(b)

R=5\,\Omega,\;L=0.40\,\text{H}

(no capacitor) (c)

R=0\,\Omega,\;L=0.40\,\text{H}

(no capacitor) (d)

R=5\,\Omega,\;C=1\,\mu\text{F}

(no inductor)